Roller mechanism for spinning machines



April 2l, 1925.

R. A. MORSE Roman uscnmsm FOR SPINNING mamas Filed Feb. 27, 1923 2sheets-sheee`f1- Fi'led Yep. 27. 1923 April 2l, 1925. 1,534,071

R. A. MORSE' ROLLER MECHANISM FOR SPINNING MACHINES 2 Sheets-Shan 2Patented Apr. 2l, i925.

UNITED STA'IE BEGINALD A. MORSE, OF PROVIDENCE, RHODE ISLAND.

.ROLLER MECHANISM EOE SPINNING MACHINES.

Application led February 27, 1923. Serial No. 621,648.

To all whom t may concern:

Be it known that I, REGINALD A. Mossa, a citizen of the United States,residing at Providence, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements in RollerMechanisms for Spinning Machines, of which the following is aspecification.

The invention relates to devices for producing cotton yarn, objects ofsaid invention being to increase the quantity of highgrade yarn producedby ring-frames and mules, to insure the uniform quality and strength ofthe products of such machines, and to prevent loss of materialoccasioned by the breaking of the yarn beyond the drawing rolls.V

In the operation of spinning devices now in practical use, thepartially-formed and loosely-wrought yarn material is liable to beabnormally attenuated and weakened at varions points by the tensionimposed by the differential action of the drawing rolls, and ifattenuation and weakening are sufliciently f pronounced, the fibers ofthe yarn will be pulled apart by the bobbin. When severance thus occursproduction stops and the severed ends of the yarn have to be splicedV bya skilled workman before production can be resumed. The splicingoperation, which is very troublesome, leaves imperfect spots or slubs inthe finished yarn, and these have to be remo-ved by experts.

This defect in the operation of spinning machines has heretofore beenregarded as an unavoidable obstacle to the production of yarn havingsubstantially the same caliber and strength throughout its entirelength, it having been assumed by those who are skilled in the art ofspinning that attenuation and separation of yarn fibers is due to theuneven distribution of fibers in the sliver, or to some other antecedentdefect for which there is no possible mechanical remedy.

I have found that this apparently insuperable difliculty in theproduction of yarn may be avoided even if the roving and the sliver fromwhich it is formed have attenuated or weakened portions, provided thatconditions in the dra-wing mechanism are such as to prevent abrasion andattenuation of the loosely-formed sliver. These results I attain bypreventing accumulations of such substances as lint, dust, oil andmoisture in the grooves of the flutings o-r corrugations with which thelower drawing rolls are provided, thereby permitting said rolls to fullyco-operate with the upper drawing rolls in feeding the yarn through thedrawing mechanism, without, at the same time, removing or displacing anyof the fibers from the body of the sliver. The deposits in these groovesare always of a viscous na ture, and, as I have ascertained, becomeadherent to fibers of the yarn which they detain and partially separatefrom the yarn as it passes onward through the drawing mechanism. It willbe understood that the twisted yarn formed beyond the drawing rolls isnormally under about all of the tension it can withstand, and that itmay not be able to bear the strain if the allotted fibers have beendisplaced.

The cleaning device is, preferably, a roller covered with a. fabric,such as mohair plush, having a deep and resilient pile, the filaments ofwhich are sufficiently stiff to penetrate the spaces between theflutings and dislodge any foreign matter that accumulates in the groovesof a lower roll.

The yielding character of the mohair plush enables the roller to producesuctio-n sufficient to remove loosened foreign matter from the groovesof the roll, while the filaments of the fabric receive and dissipatecharges of static electricity which tend to accumulate on the drawingmechanism and other parts of the machine.

Referring to the drawings:

Figure l is a vertical sectional view show ing my device applied topairs of a set of drawing rolls;

Figure 2 is a plan view with certain parts broken away;

Figure 3 is a perspective view of an attachment embodying my invention,and

Figures a and 5 are, respectively, enlarged end and plan views of theroller.

l is the frame of the drawing-roll mechanism, and 2 is cross bar towhich my device may be attached. This frame is provided with three pairsof drawing rolls which, as is usual, are so related to the drivingmechanism that the drawing action of the second pair of rolls is lessthan the drawing action of the third pair of rolls, 3, 1l and 5 being,respectively the upper drawing rolls, and G, 7 and 8 being,respectively, the lower drawing rolls. 9 is a guide for the yarn l()which is shown as extending longitudinally between the iippe1..and thelower rolls of the drawing mechanism.

The improvement constituting the present invention, is, preferably, anattachment which may be applied to standardized spin ning machines,although,as will be-clearly understood, any other form of device whichis capable ot' attaining the results .effect-tr` ated by my device asherein revealed, is within` the scope of the invention, the*essentialfelement of which is av device, 'preferably air'oller 11,operating to keep desired lower drawing rolls'clean. to thereby prevent?fibers of the yarn trom-adhering to their surfaces which, being`providedwith line Vflutes or oorrugations 12, receive andreta-inuparticles vof the 4iibers which are forced `into the spaces`between liutcs or corrugations by the pressure oi' the upper drawingrolls. These spaces'rcceive also-.particles of dust and lint whichbecomesaturatedvwith oil and moisture, so that the accumulationsI withinsaidspaces are lrendered viscous enough to catchand detach libereA fromthe passing yarn and' leave it weak kin those spots-where the`displacement of iibers occurs.

The drawing rollsot a spinningmachine have different peripheral speeds,the-object being toI stretch the sliver and thereby cause the iibersoiisaicl sliver to be'drawn 'into parallelism. It' thisv arrangeinent etthe tibers isnot maintained, the product will be lacking in theIrequired tensile strength and willbe liable to break when thel pullofthe bobbin puts it under tension. lt is, for-'this reason, essentialthat the deposits in the grooves of the lowerdrawing rollswhich catchthe passing fibers of the sliver,'should beremoved. llt present, theywill undo the work performedy by the drawingrolls,-and leave the `fibersin various undesired posh tions.

The roller llis made orp wood or other suitable substance, andisiprovided with ,t layer of some materialwhich is capable of keepingthe Vgrooves between the 'flutes .or corrugations free tromtoreignimatters,the material whichl l 4have successfully einployed inactual practice being ai piled fabric oi' mohair whose filaments are.suiiiciently stift and resilient to enter andl effectively cleansaidgroovesl without suffering permanent distort-ion. The nature of thesurface of the roller is, however, i1nmaterial, provided it is-ot suchcharacter as'to eiiectually perform the work of maintaining the dra-wingrolls 1in such. condition that the sliver may .pass '.theinuwithoutzbeing ini-- paired or broken.`

This roller` l1 is. .provided with trunnions 13 resting in oblique openbearings 14 oi a yoke;lfwhichaisdisposed below the level ot the lowerrolls 6, 7 and 8 in such position that the rollervllawillgbe in contactwith the rolls G and 7, or such other drawing rolls in anyparticular;machineas mayarequire its cooperation. illhe 'yokelf 15` 5 isfinounted in a bloclnS:havingtarslot 19lifor itsxrecep tionthei'ta`il.part .2050i said yoke being ,plv oted fat 21. .Tlieitblock. )18:carriesaeaveal; springzQQawhosefneei end 23;ibears against the .-tail endjoiiithe 'yokexzso as.;;to "lift its fronts end and gently@ press v"the.f roller" 1l against L the 4'flower drawing trolls i The block, 18;,is::providedfavith1a .inotcheito areceive .Y the cross f bar f. 2ofathcz, iframe 1, and thenpperfendof said iblockwhas a-fset screw for:gsecuring; @said blockyirlnly :to i said cressribar.

I; :havemadegjtheI rolled-calling. .device ydetachable V.in1orderfthat.:it-.mayJ ibe applied to standardized machines without requiringalterations in` their; .nieehanismafV although,

as will be.understeod.spinning `machines y.

containing inseparable moll-cleaning. means are within the scope of :my:invention. y

' Havingthusdescribed my invention what l claimfis: V

l. Lgspinning machine ,having in-co1n1 bination pairs of, drawing rolls,and a roller having thereon aflayer ofnnohair.;` lush. for cleaning`thegrooves ofy ai'lower ro Lof said pairzoi rolls.

. 2. u'isrfanA articlevofimanufacture, a cleafnf ing, device.for-.spin1ing imachines including a cleaning roller v for i the:Vgroovesy ofi a` lower drawingroll, a yoke;` a block supporting said yokeand a springfbearingon-Said yoke, `said yoke being lpivotallyk mountedinsa-idblock. 3a Means for 4.-keep-inga longitudinallygrooved. drawing`i roll slaan, comprising 1 a member havinga a-surzfacelield against thesurface of the. drawing roll, thecontactng surfacesfbeing .caused totravel Aat substantially the-,same speed, the; su-rtaccaof, the cleaningmember being. coveredwith `projecting resilient filaments ofsu-ilicientlength and stiilnessta enter. ,thegrooves of the drawing roll tothebottomsithereot'.

In testimony whereof I aitix my signature.

